The spelling of the Chrysler sisters that married Niver brothers in the tree I have is Kreisler.It was researched by a German Company. Friedrich R. Wollmershauser. The Niver brothers were George b. 4-23-1751,m. Anna Margaretha Kreisler,John b.6-13-1757, m. Catharina Kreisler, Christopher b.1760 m. Elizabeth Kreisler,Marcus b. 1761 m. Magdalena Kreisler.The brothers were the sons of Johann-Michael Neuffer and Margaretha Gehrung.